Apparatus for producing perforated strips.



T. A. EDISON.

PATENTED NOV. 5, 1907.

APPARATUS FOR PRODUCING PERFORATED STRIPS.

APPLICATION FILED MAB.24.1905.

A ttes t J2) Mug l3 SHEETS-SHEET 1.

Inventor No. 870,024. PATENTED NOV. 5, 1907. T. A. EDISON.

APPARATUS FOR PRODUCING PERFORATED STRIPS.

PPLIO T 0N FILED MA 4.190 A A I R 2 5 13 SHEETSSHEE1 2.

Inventor;

Mr: M by 0 M 7(- /Ktty.

PATENTED NOV. 5, 1907.

T. A. EDISON. APPARATUS FOR PRODUCING PBRFORATED STRIPS.

D H 4 1 0 APPLICATION FILE AR 2 9 5 13 SHE-Than 3 Inventor Q6.

a 0 F A M No; 870,024. PATENTED: Nov. 5, 1907.

4 T. A. EDISON. APPARATUS FOR PRODUCING PERFORATED ST RIPS.

13 SHEETB-SHEHT 4.

APPLICATION IILED HAR. 24. 1905.

A ttest In ventor No. 870,024. PATENTED NOV. 5, 1907.

T. A. EDISON.

APPARATUS FOR PRODUCING PERPORAT'ED STRIPS.

, APPLICATION FILED MAR. 24. 1906." 13 BREEZE-SHEET 5.

AtteSt: I Ifiventor:

Wan-Ma y g No. 870,024. PATENTED NOV. 5, 1907.

T. A. EDISON. I APPARATUS FOR PRODUCING PERPORATED STRIPS.

APPLICATION FILED MAR.24. 1905.

13 SHEETS-SHEET B- I Inventor: 7% 4 W A ttest No. 870,024. PATENTED NOV.5, 1907. T. A. EDISON.

APPARATUS FOR PRODUCING PERFORATED STRIPS.

13 SHEETSSHEHT '1.

APPLICATION FILED MAR.24.1905.

L m an I N .370 024. PATENTED NOV. 5 '19071 0 T. A. EDISON.

APPARATUS FOR PRODUCING PERFORATED STRIPS.

13 SHEETS-SHEET 8.

' APPLICATION FILED MAB. 24,1905.

A ttst PATENTED NOV. 5, 1907.

T. A. EDISON. APPARATUS FOR PRODUCING PERPORATBD STRIPS.

APPLIGATION FILED MAR.24.1906.

l3 SHEETS-SHEET 9.

Inventor A ttest PATENTED NOV. 5 1907. T. A. EDISON. APPARATUS FORPRODUCING PERFORATED STRIPS.

APPLICATION FI LED MABHM. 1906.

13 SHEETS-SHEET 10.

' 1'6 v Attest: I Inventor: A 34M 4 49 3 M 4 by 0 N 870 024. PA EN'TED.5 19 '7. 0 T. A. EDISON. T NOV 0 APPARATUS 'FOR PRODUCING PERPORATBDSTRIPS.

' APPLIOATION FILED MAR.24,1905.

' 13 SHEETS-SHEET 11.

lll l l m l 'mlnmmlmmmum:

I IIJI v I Inventor A PATENTBD NOV. 5, 1907. T. A.- EDISON. APPARATUSPOR'PRODUOING PERFORATED STR IPS.

1a SHEETS-SHEET 12.

- APPLICATION FILED MAR, 24. 1905.

In ventor by a A.

i To all whom it may concern:

THOMAS A. EDISON, F LLEWELLYN PARK, OR NGE, NEW JERSEY, AsSIGNoR TOEDISON STORAGE BATTERY COMPANY, OF WEST ORANGE, W JERSEY, A CORPORATIONOF NEW JERSEY.

PARATUS OR PROD CING PERFORATE STRIPS.

Be it known that I, THOMAS'A. EDisON, a citizen of the United States,residingat Llewellyn Park, Orange,

county of Essex, and State of New Jersey, have invented certain newanduseful- Improvements in Apparatiis for Producing Perforated Strips, ofwhich the following is a specification. My invention relates -to theproduction of perforated strips of thin sheet metal, such for example,as are used for making pockets to contain active material in storagebatteries. It has been found that the most economical manner to formsuch pockets is to take a long continuous ribbon of sheet metal andperforate and then electroplate the same before it is cut up into blanksfrom which the pockets are to be made. It is found in prac tice,however, that it is impossible to secure long con-.

tinuous strips of uniform width. Such strips as are oh the market varyin width to .such an extent as to render them unfit for use for thepurpose described, unless treated in some special manner. I

It is the object of the present, invention to provide 2 apparatus bywhich a perforated strip of unvary ing views, of which width may beproduced from an ordinary commercial strip at one operation, and ifdesired, by a subsequent operation, a strip having eyeleted perforationssuch as'is claimed in my. application for Letters Patent, filed July 23,1904, Serial No. 217,881, may-be produced. v

'Reierence is hereby made. to the accompanying.

drawings wherein the same reference numerals ,are

used to designate corresponding parts'in the several Figure 1 is a planand Iiig. 2 a side elevation showing one form of apparatus embodying myinvention-f Fig; 3 is a broken plan view showing the maid portion: ofthe mechanism for guiding, perforating and cutting the strip. Fig. 4 isan end elevation of Fig. 3." Fig; 5 is'a section on the line a-sti Fig.Fig. ,6 is area-r elevation of the mechanism shown gander Fig. 7 is asection on line 77.o i-Fig. ,4. 9 l

are detail sectional views of the cooperating, perforating and cuttingrolls. Figs.10 and ll are-detail views showing one of the spring pressedguides for the flexible strip-during its progress. through'the ma:

chine.' Fig. 12 .is asection on=th e line 12512 61 10 Figs. 13, 14 and15 are views showing in plan, side and rear elevation respectively, theadjustableguide situated nearthe rolls and used for the flexible strip;16 is a section on line' 16-16 of Fig. 15. Fig. 17 is a rear'elevationpartly sectibn showing thesupply reel andl itssupport, Fi

I 18 is a section on'the line 18-18 of Fig. 1-7. Ei g.

is a rear elevation partly in s'ectionof the take-up "reels and theirsupport..- Fig. 20 is a section on line 20-20 I of Fig. 19.-

2 1 .;i i' i '22 'are sectional views of the forationsis eyeleted orupset.

. Patented Nov. 5,1907.

rolls '12 and 14 with the projections and depressions of the diesgreatly exaggerated, the two. figures being illustrative of means forproducing strips-of perforated sheet metal in which the metalsurrounding the per:

The apparatus shown consists broadly ofthree parts,

namely, mechanism A for supplying a continuous strip ,of metal to beoperated upon; mechanism B for continu ously perforating and cutting thesaid strip and mechanism G for continuously up the finished strip orstrips (see Figs.'1'and 2).

'The mechanism A (shown in by means of a clamp 9 carriedb'y the rod 10,and which -may be tightened by meansof the adjustingscrew 11, so "astoproduce any desired amount of resistance to the turning of the shaft 5reel 4.

The perfora ting mechanism B comprises a i f l operating and 14. These'members, comprise cooperating -mal'e female. dies between which thestrip-is progressively moved. The'roll 12 (see Eig. 9) comprises asleeve 15 provided with'a shoulder 16. Uponthe sleeve is placed first adisk17 4 then the circ'ular'male' die .18 and then a second disk 17,

' The endof the sleeve being thieaded as shown 9.1120, 9. 'nut 21 isscrewed on to the'sleeve to hold the part s I tightly together, awasher22 being slipped on ahead of- 1 the nut, if necessary. The disks17 are of greater diameter than the die 18 and'are preferably'ofhardened p 3 steel, orderthat either one oijfthem may serve ascutterinicoiiperationwith 'alc tter carried b'ythe r 11 1 .114. latteit-roll 1(see 8) comprisesa 'sleeve' 23 carrying circular'feniale die.24', the depressions pf" J which correspond withthe elevations of thedie. 18. i

The gieeveza projects slightly ii aiidiiiiediefz and 9'5 uponprojecfing'portion placed a thin disk 25 t hardenedsteeli "The theparts-24nd to 1. gether is ale the distance between the disks 17 of-th,i-ou 12,6 when the dies are in mii operative pesitlonsfo'rlipei-iorating the strip of metal,

the 25 shearing relation't'o one of the disks 17, whereby one edge ofthe strip'f'will be. trimmed at the same time that'the perforations areformed. Obviously the cutters l7 and-25' be readily replaced by otherswhen the cutting edges become worn." When onlyi'one of the cutters. 17is worn, the ro1l-12 may be turned so as to bring the sharpicutter intoaction. f

The mechanism forsupporting-and driving the perfo-' rating roll 12comprisesla base or bed plate-26 provided with journal boxes 27, 27, inwhich revolves the shaft v detail in Figs/ 17 and 18) comprises a reel 4supported on a shaft 5, which isjournaled in uprights 6,6. The hub ofthereel is sl0t-. I ted as shown at 7 for engagementwith the .pin 8 carried70 by the shaft 5, whereby the turnin'gof the reel causes the shaft toturn and the reel maybe readily slipped on or off the shaft. Therotation of the shaft-5 is retarded 28. This shaft is drven by means ofa belt 29 engaging a loose pulley 30 which carries a gear 31; the lattergear meshes with the gear 32 on the countershaft 33, and another gear'34 on the countershaft engages the gear 35 which is fixed to the shaft28. One end of the shaft 28 is reduced in diameter and is supported in aremovable journal box 36. This box is secured to the bed plate by meansof bolts 37 and is slotted as shown'at 38, sothat' upon loosening thebolts 37 the box 36 may be removed in a direction longitudinal to theshaft 28. The said shaft immediately within the journal 36 is threadedas shown at 39 for receiving a nut 40, whereby the perforating roll 12is clamped against a c0llar'41 on--the shaft 28. Obviously, the roll 12may be readily removed from the shaft 28 by the removal of the journal36 and nut 40.

The lower perforating roll 14 is carried=on an arbor 42 which turnsfreely in the block 43 "and is driven by the engagement of the dies 18and 24'. The'b'lock 43 is'supported at one end by an adjustable slide44' carried'by I 20 supported by an adjusting screw 45 threaded thereinand having its lower end rounded to-bear'in the cup 46 the bed plate 26.The opposite-end of the block- 43 is.

carried by the bed plate 26. The block 43 where it bears on the slide44is grooved as shown at 47 whereby the block 43 may turnnpon the slide44as an axis when its opposite end is raised or lowered by means of theadjusting screw 45. The thread of the latteris sufficiently fine toprovide a very delicate vertical adjustment" of theaxis of the lowerperforating. roll 14, and in order to indicate the amount of adjustmentthe head of thead-"J' justing screw is provided with graduations 48,which: cooperate with the pointer 49. carried by the block 43 see Fig;3.) The head of the adjusting screw is bored I as'shown at 50f0i'convenience turning,' and the screw 45 is held in adjustment by aset'scrw. 51, pro-. vided with a jam 'nut' 52.2 The slideL44 (see Figs.5 and 6) rests upon the bed plate 26 ina'gro'ove formed by the shoulder53 and the plate 54; Ai screw 55 isthr'eaded in; the bed plateimmediately below each endofithe slide 44, whereby the same may betilted at any desired .angle, that is, the slide maybe eitherhorizontalior either "end may be raised or lowered with respect totheother end. This adjustment provides for varying the direction of theaxis of the perforating roll 14, whereby any departure from parallelismof the. axes of the'rolls- 12,I

14 may be overcome and a perfect cutting'andperforating operationperformed. The slide44-is held down means of the screw 56 passingloosely-through the bed plate 26 and threaded in the slide 44; Thelateral position of the block 43 with respect to thebed plate'26 isdetermined by means of adjusting screws 57, 57' for moving the block inone direction and-"adjusting screwss 58, -58'for moving the same in theopposite direction (see Figs. 3 and 7).

While -it is possible to'obtain a strip suitab1e-for m purpose bytrimming both-edges of the stock; a; it is more' economicaland equallysatisfactory to keep one edge of the stock in perfect alinement at alltirn'es'by means of guides and to trim. the same only at its oppositeedge.

edge of the stock-with respect to the perforating rolls,-

so that it will beunnecessary to trim-the same. Thethe side of the block64 as shown. guides 63 receive the outer edge of the strip and presssshovi n in Fig. 31 The member '75 is capable oflateral adjustment bymeans of an adjusting-screw78, mounted in: an eye 79 screwed to'thejournal box'27r The adjusting screw-'78 is threaded. in the iece'SOwhichis Ihave therefore provided means for alining one carried by the plate60. which is adjustably supported by means of holding screws 61 passingthrough slots 62 (Fig. 6). These rods cause the strip to follow a zigzagcourse, thereby frictionally retarding its progressive movement. Uponone or more of the rods 59 are spring pressed guides shown in detail inFigs. 10 to 12-. The guide proper consists of a grooved button 63screwed to a block 64, by a screw 65. The block 64 is pivoted to a piece66 by a pin 67. The piece'66 is sleevedon one of the rods 59 and held inany desired position by means of a set screw 68. Upon one side of thepiece 66 is secured a spring 69, the free end of which presses againstThe grooves of the :the strip laterally against guides 70 which aresleeved on the rods 59 and held in any desired position by set screws71. Another guide is provided for the inner edge of the strip (1immediately in the rear of the perforatingrolls. This guide is shownindetail in-l igs. 13 to 16 and is in the form of a grooved button 72secured by a screw 73 to an outwardly extending arm 74 of the member 75.This-member may be adjusted vertically by means of an adjusting screw 76mounted 'in;an arm 77 which is bolted to the journal box 27, as

provided with a stud Slipassing through'a slot 82 ofthe member 75, andthe latteris firmly held in any desired position of adjustment by a nut83. The m'eniberBO is provided with a slot 84 which receives a screw 85threadedinto the journal box 27 for clamping the member 80 in itsadjustedposition. The d-isk=1'7'of the perforating roll 12which isnearest the guide 72, also acts asa guide for the inner edge of thestrip. r

In practice it is found that .strips of metal suitable for :l'ieing'operated on' b'y the apparat us'"herein described,'='can be obtainedfrommanufacturers inva -rious widths. I find that strips'havinga width (ifthree inches can be readily handled and'as the perforated '1 stripswhich are generally used-in'tli' makeup of Edison storagebatteries are alittle less than three-quarters of an inch wide} I airtab'letoobtain'fromthree in'chs tock four of the perforated strips. Thisis=do"n'e' of course,

running the material through the apparatus' four "timesjzat eachoperation refnoving'a perforated strip of the requisite width. Since theinner edge 'of the stock corresponds 'with the inner edg'e of thefinished strip" 9 and the cutters operate toiform th'e 'ou'ter'edge ofthe finished strip, it is evident that there' is no waste of materialtill the last operation upon thestoc-k, at which time there will beavery narrow ribbon-removed from the fourth perforated stripywhidr beingtoo narrow to use, forms so niuch waste." But when stock is'used which'is only a little wider than the. finished strip,

to every strip of finished product; i 4 v v In order to use a'strip ofstock which "is sufficiently" wideto form two or more perforatedstripsyI provide two take-up reels'87f87 one forreceiving. theperforaved strip and the other for receiving what remains of the stockafter the perforated strip-has been'sepa there will necessarily be astrip of waste corresponding rated therefrom. The axes of the reels arein differeiit horizontal planes, as shown in Figs. 2, 19 and 20,wherecorresponding in width thereto is placedupon the shaft otherperforated strip in case it is'of sufiicient width,

1 sure a steady application of power to the reels 87, "and inclined tothe body of the strip at less than a right by the strips 0 and d intowhich the original stock is divided by the cutters on the perforatingrolls are separately, recovered'without danger of becoming entangledwith each other,- and whereby a direct pull can be obtained upon each ofsaid strips in the direction of its length. The reels 87 may be similarin structure to the reel 4 previously described, differing only inwidth. Each of the reels87 is mounted on a shaft 88 journaled inuprights 89. The reels arepreferably driven from the main shaft 28, theupper reel being shown as'driven by a belt 90 passing around a pulley 91on said main shaft and around a pulley 92 loosely mounted on the shaft88, the pulley 92 forms one member-of a friction clutch, the othermember being a cupped disk.93 keyed to the shaft, the member 92 be-f ingpressed against the concave face of said disk by a spring 94 surroundingthe shaft 88 and held under com-' pression by an adjusting nut 95threaded'on the end. of the said shaft. The mechanism for driving thelower reel is the same as that just described, except that the pulley 92is replaced by asprocket 96, which is operated by a chain 97 andsprocket 98 carried by the main shaft 28. Obviously the frictionconnections will inwill prevent the power from exceeding a certainlimit, whereby, danger of breaking or tearing the strips is avoided. Thepressure of the spring and therefore the amount of pull upon each of thestrips can be. regulated by the nuts 95. f H g The operation of theapparatus is briefly as follows: A strip of stock a of any desiredwidth, on a reel 4 5. The stock passes thence through the wiper b and ina zigzag manner under and over the guide rods 59, the inner edge of saidstrip being pressedby the guides 63 against the'fixed guides-70, 72 Fromthe latter, it passes between the perforating rolls by which it issimultaneously perforated and cut, thereby forming two strips c and done of which 1 is a perforated strip and the other of which, 0,constitutes the balance of the stock which may be operated upon again toform'anbut otherwise it is merely waste. The strips 0 and d arethereupon caused to pursue paths one of which is above the other and.are passed around reels 87 of appropriate width, which are used fortaking up the strips progressively, and whichfurnish thenecessarytension'for drawing the strips through the apparatus, overcoming thedrag caused by the guides, guide rods, and retarding device 9, the reels87 being provided with frictional driving means whereby breaking ortearing of the strips is prevented. v i p The elevations and depressionsof the surfaces of the 'cocperating dies for forming the perforationsare such as to form perforations which are surrounded ,by metal angle.It is sometimes desirable to form perforations wherein the metalsurrounding the same is inclined as much as or more than a right angle.Such perforations may be formed by passing a strip d which has beenperforated in the manner heretofore described, between the rolls l2 and14 a second time (or between rolls similar thereto), but with a reversalof the strip and rolls with respect to each other; that is, by run ningthe strip through in the same direction as before,

' than a right angle.

. is as follows: I

but turned over, or else with the rolls reversed with respect to thestrip (see Figs. 21 and 22). vIn this case an eyeleting orupsettingoperation 'is performed by themale die,jso that a strip e isproduced'wherein the metal surrounding the perforations is bent so thatits inclination to the body of the strip'is equal to or greater Havingnow described my invention, what I claim as new therein and desiretosecure by Letters Patent 1. In an apparatus of the character described,a pair of coiiperating perforating rolls, means for progressivelyfeeding to said'rolls a strip of material of greater width than theworking surfaces of the rolls, means for guiding one edge of said stripinto alinement with one edge of said 30 surfaces, and means forcontinuously separating the perforated and unperforated portions of thestrip, substantially asset forth.

2. In an apparatus of the character described, a pair of coiip'eratingperforating rolls, means for progressively feeding to said rolls a.strip of material of greater width than" the working surfaces of therolls, means for guiding one ed e of said strip into alinement with oneedge of .said surfaces, and means in alinement with the other edge ofsaid surfaces for continuously separating the perforated audunperfoi'ated p0rti0hs.of the .strip,- substantially as set forth.

3.-In an apparatus of the character described, a pair of c'oiiperatingperforating rolls, means for progressively feeding to said rolls a stripof.lnaterial of greater width than the working surfaces of the rolls,means for guiding one edge of said strip into alinement with one edge ofsaid. surfaces, and cooperating cutting edges carried by the rolls forcontinuously separating the perforated and unperforated portions ofthesaid strip, substantially as set-iforth. 10

4. In an apparatus'of the character described, a pair of cohperatingperforating rolls, means for progressively feed;

ing to said rolls a strip of material of greater width than the workingsurfaces of the rolls, means for guiding-one "edge'of s aid strip intoalinement with one edge of said .105

coiiperating perforating rolls, means forprogressively feedsurfaces, andcoiip crating cutting edges carried by the rolls and occupying the sameplane. as the other edge of said surfaces for continuously separatingthe perforated and unperforated portions of thesaid strip, substantiallyas set forth.

5.' Inan apparatus -of the character described, a pair of cooperatingperforating rolls, means for progressively feeding to said rolls a stripof material of greater. width than the working surfaces of the rolls,one or more guides in alinement with one edge of said surfaces, meansfor pressingione edgeof said strip against said guides and, means iforcontinuously separating" the perforated and unperforated portions ofthe said strip, substantially asset forth.

6. In an apparatus of. the character described, a pair of ing to saidrolls a strip of material of greater width than the working surfaces ofthe rolls, one or more guides inalinement with one edge of saidsurfaces, means for pressing one edge of said strip against said guides,and coiiperating cutters carried by 'the rolls for continuously sep-farating the perforated and unperforated portions of the said strip,substantially its set forth.

7. In an apparatus of the character described, a pair of codperatingperforating rolls, means for progressively feeding to said rolls a stripofmaterial of greater width than .the working surfaces of the rolls, oneor more guides in alinement with one edge of said surfaces, one or morespring p'ressedguides for. pressing said strip laterally against saidfirst guides, and means for continuously separating the perforated andunperfornted portions of the said strip, substantially as set forth.

8. In an apparatus 'of the character described, a pair of codperatingperforating rolls; means for progressively feeding to said rolls a'stripof material of greater width than the working surfaces of the rolls, oneor more guides in aiinement with one edge of said surfaces, one or morespring pressed guides for pressing said strip laterally against saidfirst guides and coiiperating cutting edges carried by the rolls forcontinuously separating the perforated and unperforated portions of thesaid strip, substantially as set forth. a p

9. In an apparatus of the character described, a pair of coiiperatingperforating rolls, means for progressively feeding to said rolls a stripof material of greater width than the working surfaces of the rolls, oneor more guides capable of lateral adjustment into alinement with oneedge of said working surfaces, means for pressing oneedge of said stripagainst said guides and means for continuously separating .theperforated and unperforated portions of said strip, substantially as setforth.

10. In an apparatus of the character described,a pair of coiiperatingperforating rolls, means for progressively feeding to said rolls a stripof material of greater width than the w rking surfaces of the rolls, aguide, means for bolding said guide in various positions of verticaladjustment,

, means for pressing one edge of said strip against said guide and meansfor continuously separating the perforated from the unperforatedportions of said strip, substan tially as set forth. 7

11.' In an apparatus of the character described, a pair of coiiper'atingperforating rolls, means for progressively feedint. to said rolls astrip of material of greater width than the working surfaces of therolls, a vertically and laterally adjustable guide, means for pressingone edge of said strip against said guide and means forcontinuouslyiseparating the perforated and unperforated portions of saistrip, substantially as set forth. 7

12. In an apparatus of the character described, a pair of cctjperatingperforating rolls, means for progressively feeding to said rolls a stripof material of greater width than the working surfaces of the rolls, oneor more guides in alinement with one edge of said surfaces, one or morelaterally adjustable spring pressed guides for pressing said striplaterally against said first guides, and means for continuouslyseparating the perforated and unperforated portions of the said strip,substantially as set forth.

13. In an apparatus of the character described, a pair of cooperatingperforating rolls, means for progressively feeding to said rolls a stripof flexible material, a plurality of guide rods so placed as to deflectand frictionally retard the said strip, and guides laterally adjustableon said rods, substantially as set forth.

14. In an apparatus of the character described, a pair of roiiperatingperforating rolls, means for progressively feeding to said rolls a stripof flexible material, a plurality of laterally adjustable guide rods soplaced as to-deflect and frictionally retard the said strip, and guideslaterally adjustable on said rods, substantially as set forth.

15. In an apparatus of the character described, a roll or die supportconsisting of a frame or blocksupported at its rear on a slide and atits front on a vertical adjusting screw, substantially as set forth.

16. In an apparatus of the character described a support for a roll ordie consisting of a frame or block supported at its rear on a slide andat its front on a vertical adjusting screw, and means for laterallyadjusting said block, substantially as set forth.

17. In an apparatus of the character described, a sup port for a roll ordie, consisting of a frame or block supported at its rear on a slide andat its front on a vertical adjusting screw, and means for tilting saidslide in a ver' tical plane, substantially .as set forth.

18. In an apparatus of the character described, a support for a, roll ordie consisting of a frame or block 43 supported at its realon a slide 44and at its front on a vertical adjusting screw 45, and. a laterallyadjustable guide plate 60 carried by said frame, substantially as setforth.

19. In an apparatus of the character described, a pair of cooperatingperforating rolls, means for guiding a strip of sheet metal throughsaidrolls with one edge in alinement with one edge of the workingsurfaces thereof, means for longitudinally severing said strip, and apair of reels for separately receiving the two parts of said severedstrip, substantially as set forth.

20. In an apparatus ofthe character described, a-pair.

of cooperating perforating rolls, means for guiding a strip of sheetmetal through said rolls with one edge in salinement with one edge ofthe working surfaces thereof, means for longitudinally severing saidstrip, a'pair of reels for for longitudinally severing said strip, apair of reels for separately receiving the two parts of said severedstrip, means for separately driving said reels, and frictionalconnections interposed between each of said reels and said drivingmeans, substantially as set forth.

22. In an apparatus of the character described, a pair of coiiperatingperforating rolls,- means for guiding and feeding a strip .of sheetmetal through said rolls with one edge in alinement with one edge of theworking surfaces thereof, a revoluble supply reel for said strip andmeans for retarding the revolution of said reel, substantially as setforth. I

23. In an apparatus of the character described, a. pair of cotipei-atingperforating rolls, means for guiding and feeding a strip of sheet metalthrough said rolls with one edge in alinement with one edge of theworking surfaces thereof, a supply reel carried by a revoluble shaft anda friction clamp applied to said shaft forretarding its move ment,substantially as set forth.

v 24. In an apparatus of the character described, a body or bed plate,an outwardly movable journal blo'ck, means for clamping said journalblock to said bed plate, a driven shaft having a reduced end journaledin said block and a threaded portion adjacent thereto, a removableperforating roll carried by said driven shaft, and a nut threaded onsaid shaft for securing said roll, substantially as set forth.

This specification signed and witnessed this 23rd day of March 1905.

- THOMASA. EDISON.

Witnesses: I

DELOS HOLDEN. FRANK L. DYER.

